This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The suffix-ite in the name of a polyatomic ion becomes ..... in the acid name. A) -ous. B) -ate. C) -ide. D) -ic. Show Answer Correct Answer: A) -ous. 2. Barium Hydroxide is a strong base. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. What is the meaning of the word 'acid'? A) Sour. B) Bitter. C) The ashes. D) Burn. Show Answer Correct Answer: A) Sour. 4. Which of the following carboxylic acids is expected to have the highest boiling point? A) CH$_{3}$CH$_{2}$COOH. B) CH$_{3}$CH(OH)COOH. C) CH$_{2}$(COOH)$_{2}$. D) CH$_{3}$CH(Cl)COOH. Show Answer Correct Answer: C) CH$_{2}$(COOH)$_{2}$. 5. The process to go from DNA to mRNA is ..... A) Translation. B) Transcription. C) Replication. D) None of the above. Show Answer Correct Answer: B) Transcription. 6. HCl is a strong acid.What is the pH of a 0.001 M HCl solution? A) 1. B) 3. C) 5. D) 11. Show Answer Correct Answer: B) 3. 7. When dissolved in water, acids produce: A) Bases. B) Salts. C) Hydronium ions. D) Hydroxide ions. Show Answer Correct Answer: C) Hydronium ions. 8. We feel hungry due to the corrosive action of ..... on the inner lining of the stomach A) Sulphuric acid. B) Nitric acid. C) Benzoic acid. D) Hydrochloric acid. Show Answer Correct Answer: D) Hydrochloric acid. 9. When an ant bites, it releases ..... acid. A) Acetic. B) Formic. C) Hydrochloric. D) Nitric. Show Answer Correct Answer: B) Formic. 10. The natural stickiness of each individual atom, caused by the movement of its electron cloud is A) Electrostatic charges. B) Van der Waals Forces. C) S-S bond. D) Hydrogen bonding. Show Answer Correct Answer: B) Van der Waals Forces. 11. Which of these are not properties of acids? A) They taste sweet. B) They conduct electricity. C) They react with active metals. D) None of the above. Show Answer Correct Answer: A) They taste sweet. 12. What are properties of a base? A) Slippery, bitter, does not react with metals, pH above 7. B) Slippery, bitter, reacts with metals, pH below 7. C) Sour, reacts with metals, pH below 7. D) Sour, reacts with metals, pH above 7. Show Answer Correct Answer: A) Slippery, bitter, does not react with metals, pH above 7. 13. When turmeric solution is poured into lime juice, the colour ..... A) Changes from yellow to red. B) Changes from red to yellow. C) Remains yellow. D) Changes from yellow to green. Show Answer Correct Answer: C) Remains yellow. 14. What is the main component of acid rain? A) Hydrochloric acid. B) Sulfuric acid. C) Nitric acid. D) Carbonic acid. Show Answer Correct Answer: B) Sulfuric acid. 15. What is the name of HCl? A) Hydrochloric acid. B) Chloric acid. C) Hypochloric acid. D) Chlorous acid. Show Answer Correct Answer: A) Hydrochloric acid. 16. A pH of 8 is how many times more acidic than a pH of 11? A) 3. B) 30. C) 100. D) 1000. Show Answer Correct Answer: D) 1000. 17. Acids react with metals to produce hydrogen gas. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Hydrochloric Acid solution affect ..... litmus paper A) Red. B) Blue. C) Both of these. D) None of these. Show Answer Correct Answer: B) Blue. 19. WHICH ONE IS SYNTHETIC INDICATOR? A) TURMERIC INDICATOR. B) LITMUS PAPER. C) CHINE ROSE INDICATOR. D) PHENOLPHTHALEIN. Show Answer Correct Answer: D) PHENOLPHTHALEIN. 20. SIIL $ _ {4} $ A) Silicon tetrachloride. B) Silicon quadchloride. C) Monosilicon tetrachloride. D) Silicon chloric acid. Show Answer Correct Answer: A) Silicon tetrachloride. 21. In an mRNA strand, the codon GCC codes for the amino acid ..... , while CCG codes for the amino acid ..... A) Proline (Pro), Valine (Val). B) Alanine (Ala), Lysine (Lys). C) Valine (Val), Lysine (Lys). D) Alanine (Ala), Proline (Pro). Show Answer Correct Answer: D) Alanine (Ala), Proline (Pro). 22. This ion is responsible for the properties of acids A) Sodium ion. B) Hydrogen ion. C) Hydroxide ion. D) Oxide ion. Show Answer Correct Answer: B) Hydrogen ion. 23. What is the formula for phosphorous acid? A) H$_{3}$PO$_{4}$. B) H$_{2}$PO$_{4}$. C) H$_{3}$P. D) H$_{3}$PO$_{3}$. Show Answer Correct Answer: D) H$_{3}$PO$_{3}$. 24. If the acids take the action of alkaline ..... and ..... form A) No ustone water. B) Building. C) C gas and water. D) Lossy gas. Show Answer Correct Answer: A) No ustone water. 25. The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been? A) 3. B) 9. C) 7. D) 5. Show Answer Correct Answer: B) 9. ← PreviousNext →Related QuizzesClass 7 Science Chapter 4 Acids Quiz 1Class 7 Science Chapter 4 Acids Quiz 2Class 7 Science Chapter 4 Acids Quiz 3Class 7 Science Chapter 4 Acids Quiz 4Class 7 Science Chapter 4 Acids Quiz 5Class 7 Science Chapter 4 Acids Quiz 6Class 7 Science Chapter 4 Acids Quiz 7Class 7 Science Chapter 4 Acids Quiz 8Class 7 Science Chapter 4 Acids Quiz 9Class 7 Science Chapter 4 Acids Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books